check if a variable is undefined or NULL

check if a variable is undefined or NULL

linked_class

code

linked_uid

SYTk7

views

9

week_num

1

month_num

1

year_num

24

id: 150438
uid: TouS9
insdate: 2024-01-01 01:30:15
title: check if a variable is undefined or NULL
additional:
category:
linked_class: code
linked_uid: SYTk7
views: 9
week_num: 1
month_num: 1
year_num: 24

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This is my test area for webdev. I keep a collection of code here, mostly for my reference. Also if i find a good link, i usually add it here and then forget about it. more...

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The transform-style CSS property sets whether children of an element are positioned in the 3D space or are flattened in the plane of the element.
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